qmk_firmware/keyboards/lfkeyboards/mini1800/revc/keyboard.json

{
    "processor": "at90usb646",
    "bootloader": "atmel-dfu",
    "features": {
        "bootmagic": false,
        "mousekey": false,
        "extrakey": true,
        "nkro": true,
        "audio": true,
        "watchdog": true
    },
    "qmk": {
        "locking": {
            "enabled": true,
            "resync": true
        }
    }
}